SMP21 is a secondary total radiation meter integrated with CMP21 sensor technology, featuring RS-485 Modbus ® Interface and analog output, low maintenance workload, 5-year warranty (*).
SMP21 is equipped with a desiccant that can be used continuously for at least 10 years, significantly reducing maintenance workload. If the SMP21 is equipped with a CVF4 ventilation device, the time interval for cleaning the circular cover can be extended and the measurement quality can be optimized. SMP21 is equipped with a Modbus ® RTU interface, the analog output signal is amplified and the response time is improved. The measurement data is individually temperature corrected, and it comes with cosine response data measured one by one. Its power supply range is wide and the power supply voltage is low, between 5-30VDC, making it easy to integrate with meteorological stations and solar power stations. SMP21 is designed with protection against overvoltage, electrode reverse connection, and short circuit. Due to the standardized output and connectors used in each SMP21, you can easily exchange instruments for recalibration. The standard components provided include SmartExplorer Windows for recording data ™ Software, data display screen, and Modbus ® Address setting module.
Within 6 months of purchasing this product, end users must complete product registration to activate the extended warranty period.
application area
Meteorology | Industrial Testing | National Defense | Agriculture | Environmental Protection | Photovoltaic Power Plants | Other Top Solar Radiation Monitoring
FEATURES
ISO 9060 Class A sub standard
Individual temperature calibration range: -40 ℃~+80 ℃
No need to replace desiccant within 10 years
RS-485 Modbus ® communication model
5-year warranty period (*)
ISO 9060 sub standard
The highest precision total radiation meter
Minimum directional error<5 W/m ²
Individual temperature calibration range: -40 ℃~+80 ℃
No need to replace desiccant within 10 years
RS-485 Modbus ® communication model
5-year warranty period (* conditional)

Optional Accessories
CMB1 installation bracket
CM121B/C shielding ring
CMF installation fixator
CVF4 ventilation device